"Hang the Fuck Up!" the cell phone correct version (especially appropriate for vehicular maladiction) of the well-established STFU.

"HTFU and DRIVE!" Ted shouted at the smugly self-absorbed yuppie soccer mom who was toddling along the freeway at 40mph in a van filled with children while simultaneously sipping her non-fat-non-dairy-decaf frap and babbling away on her cell phone oblivious to the furious world raging around her.